US Army Corps of Engineers
Hydrologic Engineering Center

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HEC-RAS 6.7 Beta 5

The Hydrologic Engineering Center's (HEC) River Analysis System (HEC-RAS) software allows you to perform one-dimensional steady and 1D and 2D unsteady flow river hydraulics calculations.
HEC-ResSim 4.0

The Hydrologic Engineering Center's (HEC) Reservoir System Simulation (HEC-ResSim) software is used to model reservoir operations at one or more reservoirs for a variety of operational goals and constraints.
HEC-RTS 3.5

The Hydrologic Engineering Center's (HEC) Real Time Simulation (HEC-RTS) software is a comprehensive data acquisition and hydrologic modeling system for short-term decision support of water control operations in real time.
HEC-HMS 4.13
The Hydrologic Modeling System (HEC-HMS) is designed to simulate the complete hydrologic processes of dendritic watershed systems. The software includes many traditional hydrologic analysis procedures such as event infiltration, unit hydrographs, and hydrologic routing.

The Hydrologic Modeling System (HEC-HMS) is designed to simulate the complete hydrologic processes of dendritic watershed systems. The software includes many traditional hydrologic analysis procedures such as event infiltration, unit hydrographs, and hydrologic routing.
HEC-EFMSim 1.0
The Ecosystem Functions Model - Simulation (HEC-EFMSim) software allows users to create and characterize ecological communities that are
                    simulated in a data-defined virtual environment where they interact with that environment, themselves, and each other. Simulation results can be viewed as animations of variables such as count, size, and density for virtual communities.

The Ecosystem Functions Model - Simulation (HEC-EFMSim) software allows users to create and characterize ecological communities that are simulated in a data-defined virtual environment where they interact with that environment, themselves, and each other. Simulation results can be viewed as animations of variables such as count, size, and density for virtual communities.

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